Answer:
The answer to your question is: letter C
Explanation:
Chemical properties is a change is matter observed due to a chemical reaction.
A) Water is a polar molecule. This is a physical property, there is no chemical reaction. This option is wrong.
B) Water is the universal solvent. This is a physical property of water, there is no change of matter, so this is not a chemical property.
C) Water reacts with group 1 metals. This is an example of a chemical property because metals react with water and matter changes to a new substance, this is the correct answer.
D) Water has a high specific heat capacity. This is a physical property, it is not the correct answer to the question.
Answer:
B
Explanation:
Asteroid - A rock that rvolves arounf the sun / star.
Moon - A natural satillite that revolves around earth/ planet.
Answer:
[H⁺] = 3.548 x 10⁻⁴ M.
Explanation:
∵ pH = -log[H⁺]
∴ 3.45 = -log[H⁺]
log[H⁺] = -3.45
<em>∴ [H⁺] = 3.548 x 10⁻⁴ M.</em>
Answer: 66N / 4.448 = 14.7lbs
Explanation:
this is coverted in to pounds
Answer:
66.0 atm
Explanation:
We can calculate the osmotic pressure (π) using the following expression.
where,
Step 1: Calculate i
Sodium sulfate completely dissociates according to the following equation.
Na₂SO₄ ⇒ 2 Na⁺ + SO₄²⁻
Since it produces 3 ions, i = 3.
Step 2: Calculate M
We can calculate the molarity of Na₂SO₄ using the following expression.
Step 3: Calculate T
We will use the following expression.
K = °C + 273.15
K = 20°C + 273.15 = 293 K
Step 4: Calculate π